What are some alternatives?
When comparing mnIMAPSync and Clearbit, you can also consider the following products
imapsync - Console-based utility for migrating IMAP mailboxes.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.
Yippie Move - The world's best email transfer tool
Lead411 - Lead411 provides company intel, contact email address, direct phone numbers and a sales cadence tool.
OfflineIMAP - OfflineImap synchronizes email between an IMAP server and a MailDir or between two IMAP servers.
LinkedIn Sales Navigator - Sales tool for LinkedIn users.